Subsegments

data structures, implementation

Recycling Bottles

dp, geometry, greedy, implementation

Gennady the Dentist

brute force, implementation

Identify the Operations

combinatorics, data structures, dsu, greedy, implementation

Maximum Xor Secondary

data structures, implementation, two pointers

Array and Segments (Easy version)

brute force, greedy, implementation

Too Many Impostors (easy version)

constructive algorithms, implementation, interactive

Clique Problem

data structures, dp, greedy, implementation, sortings

Nauuo and Cards

greedy, implementation

Desktop Rearrangement

data structures, greedy, implementation

Cloud of Hashtags

binary search, greedy, implementation, strings

Ksyusha and Chinchilla

constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees

Rating Compression

binary search, data structures, greedy, implementation, two pointers

Boxes Packing

binary search, implementation

Vessels

data structures, dsu, implementation, trees

Cyclic Operations

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

Bicycles

graphs, greedy, implementation, shortest paths, sortings

Max GEQ Sum

binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers

Busy Robot

implementation

Compressed Bracket Sequence

brute force, implementation

Molly's Chemicals

binary search, brute force, data structures, implementation, math

Moscow Gorillas

binary search, dp, greedy, implementation, math, two pointers

Selling a Menagerie

dfs and similar, dsu, graphs, implementation, math

Vus the Cossack and Strings

implementation, math

Two Teams

data structures, implementation, sortings

Ugly Pairs

dfs and similar, greedy, implementation, sortings, strings

Vasya And Array

constructive algorithms, greedy, implementation

BA-String

brute force, dp, greedy, implementation, math

Tokitsukaze and Good 01-String (hard version)

dp, greedy, implementation

Prefix Purchase

greedy, implementation, sortings

Rudolf and Snowflakes (hard version)

binary search, brute force, implementation, math

Tic-tac-toe

brute force, games, implementation

Minimum Euler Cycle

constructive algorithms, graphs, greedy, implementation

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

Exam in MAC

binary search, combinatorics, implementation, math

Playoff Tournament

data structures, dfs and similar, dp, implementation, trees

Polycarp and String Transformation

binary search, implementation, sortings, strings

Task On The Board

constructive algorithms, greedy, implementation, sortings

Slime

dp, greedy, implementation

Recover an RBS

constructive algorithms, greedy, implementation, strings

Mikasa

binary search, bitmasks, greedy, implementation

Book

binary search, brute force, data structures, dp, graphs, implementation, sortings

Going Home

brute force, hashing, implementation, math

Dreamoon Likes Coloring

constructive algorithms, greedy, implementation, math

Maximum Distributed Tree

dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees

Count Triangles

binary search, implementation, math, two pointers

A polyline

*special problem, implementation

Shave Beaver!

implementation

Game of chess unfinished

implementation

Warehouse

implementation

Kicker

implementation

Corporation Mail

data structures, expression parsing, implementation

Codeforces World Finals

implementation

Help Victoria the Wise

brute force, implementation

Wizards and Minimal Spell

implementation, strings

Bathroom terminal

implementation

Treasure Island

brute force, implementation

Harry Potter and the History of Magic

brute force, greedy, implementation

Rectangle Puzzle II

implementation, math

Blog Photo

binary search, implementation

Hit Ball

geometry, implementation, math

WTF?

*special problem, graph matchings, implementation, trees

Biathlon

binary search, implementation

Scrambled

*special problem, implementation

Bulls and Cows

brute force, implementation

Points

implementation, math

Schedule

implementation

Periodic integer number

implementation, strings

Transmigration

implementation

Tablecity

constructive algorithms, implementation

Is This a Zebra?

implementation

Sequence Formatting

implementation, strings

Frames

implementation

Comments

dfs and similar, expression parsing, implementation, strings

Higher Order Functions

implementation, strings

Sets

constructive algorithms, hashing, implementation

Levko and Array Recovery

greedy, implementation

Continued Fractions

brute force, implementation, math

Borya and Hanabi

bitmasks, brute force, implementation

Board Game

games, greedy, implementation, math

George and Number

greedy, implementation

Resource Distribution

binary search, implementation, sortings

Polo the Penguin and XOR operation

implementation, math

Pick Heroes

greedy, implementation, interactive, sortings

Bracket Sequence

data structures, expression parsing, implementation

Convex Shape

constructive algorithms, implementation

Balls and Boxes

constructive algorithms, greedy, implementation

Nearest Fraction

brute force, implementation, two pointers

Toy Sum

greedy, implementation, math

Four Segments

brute force, constructive algorithms, geometry, implementation, math

About Bacteria

implementation, math

Laboratory Work

implementation, math

Predict Outcome of the Game

brute force, implementation, math

Find Pair

implementation, math, sortings

Multicolored Cars

data structures, implementation

Three Logos

bitmasks, brute force, constructive algorithms, geometry, implementation, math

Ciel and Robot

binary search, implementation, math

Portal

brute force, data structures, dp, greedy, implementation

Anton and Chess

implementation

Matrix Walk

implementation